I recently acquired a 1989 Sullair compressor with a Kubota V1902 engine in it. It was running hot, so pulled the head and found cracks. Replaced the head and gasket with aftermarket. Runs good now with no overheating issues. It does have an issue with a loud ticking sound though. Valves have been adjusted twice and they should be in spec. I thought it was maybe a bad or several bad injectors causing "injector knock", so just replaced with new Denso's. I think it actually is a bit louder now than before, so maybe the new injectors are spraying harder and possible IP timing being off, just made it worse sounding. Unit runs smooth and clean with hardly any smoke. From listening and feeling, the tapping or knocking seems to be fuel related because you can feel the tapping in the injection lines. I haven't checked the pump timing, but that is next on my list. The unit is old and looks rough but only has 245 hours on the meter, so I can't imagine the IP ever being removed. Replaced an inline fuel filter and the canister fuel filter, along with new fuel lines. I guess something could be worn in the pump throwing the timing off. Unfortunately, I can't recall if it made this tapping before the head replacement because I was so focused on the overheating issue. I am just wondering if I really do have an issue with the pump that needs addressed or maybe these units are just noisy? Anyone running a V1902 in their tractor that can give me some insight? Thanks for the help!
V1902 noisy injection pump
- Thread starter Rossco
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North Idaho Wolfman
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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Sounds like you have a V1902 IDI engine, that engine wasn't used in tractors.
Tractors used the V1902 DI engines.
The IDI is noisier than the DI engine.
If you take a video of it (post it on youtube and give us a link) and we might be tell you if it's normal or not.
I will say, I've yet to find a worn pump or fuel cam on any engine that I've worked on, it would be a very rare thing.
Yes it is an IDI engine. I didn't realize that tractors got the DI version. I will try and get a video of it. I listened to a couple on video today and several of them do sound noisy. Maybe it's normal. Thanks
dvcochran
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Kubota M9000, New Holland TN90, Deere 2640, Vermeer 504N, Vermeer 504SI, more
I do not mean to hijack the thread but I have a Scat Trak skid steer with a V-1902 I think. It does not overheat but has a rough idle and I really do not know where to start with troubleshooting the problem. Any suggestions?
Seems to me that injectors might be a good place to start for idle issues. You may try Seafoam and see if it helps. You can search "Seafoam hot soak" and see what to do.
Ok. New question. I tried to check the timing on this V1902 today and it didn't go as I expected. I did it per procedure in the Kumar Bros. manual. I took the number one injector line totally off and then took off the fitting on the pump that holds the spring and valve in place. At this point it said to turn flywheel counter clockwise until you see fuel start to rise at pump fitting of number one. Then turn flywheel more until fuel starts to lip over the fitting. Then check flywheel to verify it is lined up with FI mark. I cannot get the fuel to rise at the fitting on the pump. The machine has an electric fuel pump, and I tried it without it on and with it on. With it on, fuel just pours out the fitting. This seemed like a simple procedure. What am I not doing or doing wrong?
North Idaho Wolfman
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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
You need to put the parts back in the pump, you only remove the injector line to check timing, it's called a spill test.
Yes. Spill test is exactly what I was attempting. From what I’ve read or seen on video, you are supposed to remove spring and little valve then put the fitting back on. Several different ways to do it from there but putting a tube on it and turning flywheel until fuel stops dripping sounds like the best to me. Problem is that I have an electric fuel pump and when you turn it on, fuel comes flowing out of the open port. Without it on I get no fuel lifting in the port when I turn flywheel. I’m thinking my problem is the fuel cutoff switch is not energized without pump being on. Probably need to disconnect fuel pump and just connect the fuel cutoff to allow fuel to flow into the IP. Does that sound reasonable?